dropbear — security advisory

{
  "id": "2381905b2c2ec686a889fd275f8ba814f7c2a4a42446f1d8ba31baf52b3174cc",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2012-0920",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2012-0920",
    "summary": "Use-after-free vulnerability in Dropbear SSH Server 0.52 through 2012.54, when command restriction and public key authentication are enabled, allows remote authenticated users to execute arbitrary code and bypass command restrictions via multiple crafted command requests, related to \"channels concurrency.\"",
    "evidence": "osv:DEBIAN-CVE-2012-0920",
    "products": [
      {
        "name": {
          "value": "dropbear",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2012.55-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "dropbear",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2012.55-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "dropbear",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2012.55-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "DEBIAN-CVE-2012-0920",
      "aliases": [
        "DEBIAN-CVE-2012-0920"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2012.55-1"
                }
              ]
            }
          ],
          "package": {
            "name": "dropbear",
            "purl": "pkg:deb/debian/dropbear?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2012-0920.json"
          },
          "ecosystem_specific": {
            "urgency": "low"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2012.55-1"
                }
              ]
            }
          ],
          "package": {
            "name": "dropbear",
            "purl": "pkg:deb/debian/dropbear?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2012-0920.json"
          },
          "ecosystem_specific": {
            "urgency": "low"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2012.55-1"
                }
              ]
            }
          ],
          "package": {
            "name": "dropbear",
            "purl": "pkg:deb/debian/dropbear?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2012-0920.json"
          },
          "ecosystem_specific": {
            "urgency": "low"
          }
        }
      ],
      "modified": "2026-10-23T17:47:42.696202016Z",
      "provider": "osv",
      "upstream": [
        "CVE-2012-0920"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2012-0920"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2012-0920",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 418495,
  "published_at": "2012-06-05T22:55:09.437+00:00"
}